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NCERT Class XI Mathematics - Probability - Solutions
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Question : 8 of 54
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An experiment consists of recording boy-girl composition of families with 2 children. (i) What is the sample space if we are interested in knowing whether it is a boy or girl in the order of their births? (ii) What is the sample space if we are interested in the number of girls in the family?
Solution:
(i) The sample space S, in knowing whether it is a boy or a girl in the order of their births in composition of families with two children is S = {BB, BG, GB, GG}. (ii) The sample space S, in knowing the number of girls in a family is S = {0, 1, 2}.
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